Symphony.

<?php

require_once(TOOLKIT . '/class.datasource.php');

    Class datasourceAlarms extends Datasource{

        function about(){
            return array(
                   "blah":"blah :)"
        }

        function grab(&$param_pool){

            $tag_list_id = "83";
            $result = new XMLElement("alarms");

            $tags = $this->_Parent->Database->fetch("
               SELECT DISTINCT (
               handle
               ), COUNT( handle ) AS count, value
               FROM sym_entries_data_83
               WHERE `entry_id`
               IN (
                   SELECT `entry_id`
                   FROM sym_entries_data_76
                   WHERE `value` = 'yes'
                   AND `entry_id`
                   IN (
                       SELECT DISTINCT `entry_id`
                       FROM sym_entries_data_75
                       WHERE `handle` = 'blah'
                   )
               )
               GROUP BY handle
               ORDER BY handle ASC
           ");

            foreach($tags as $tag){
                $tag_node = new XMLElement("ras", $tag["value"]);
                $tag_node->setAttributeArray(array("handle" => $tag["handle"], "count" => $tag["count"]));
                $result->appendChild($tag_node);
            }

            return $result;
        }
    }

?>

12:52:47 > WARNING: 2 - array_intersect() [function.array-intersect]: Argument #2 is not an array in file /symphony/lib/toolkit/class.frontendpage.php on line 338
12:52:47 > WARNING: 2 - Invalid argument supplied for foreach() in file /workspace/data-sources/data.alarms.php on line 25

AND `entry_id` IN (SELECT `entry_id` FROM sym_entries_data_75 WHERE `handle` = 'blah')

sym_entries_data_75—taglist field
sym_entries_data_76—checkbox
sym_entries_data_83—selectbox field